# Merging projects in command line

**URL:** <https://community.pix4d.com/t/merging-projects-in-command-line/5827>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [January 17, 2018, 1:56pm UTC](https://community.pix4d.com/t/merging-projects-in-command-line/5827 "2018-01-17T13:56:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Nicolas\_Rey](https://avatars.discourse-cdn.com/v4/letter/n/ecb155/32.png) [@Nicolas\_Rey](https://community.pix4d.com/u/Nicolas_Rey)\
**Post date:** [January 17, 2018, 1:56pm UTC](https://community.pix4d.com/t/merging-projects-in-command-line/5827/1 "2018-01-17T13:56:18Z")

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Hello,

Is it possible to merge two projects using the command line?

I did not find any command here:

[https://support.pix4d.com/hc/en-us/articles/202560329-How-to-use-the-command-line#gsc.tab=0](https://support.pix4d.com/hc/en-us/articles/202560329-How-to-use-the-command-line#gsc.tab=0)

If the command line does not support project merging, is it possible to manually edit or create a .p4d file for this purpose? Then the merging processes would run when the .p4d file is opened for the first time.

Many thanks for your help!

Nicolas

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**Author:** ![Pierangelo\_Rothenbuhler](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pierangelo_rothenbuhler/32/2439_2.png) [@Pierangelo\_Rothenbuhler](https://community.pix4d.com/u/Pierangelo_Rothenbuhler)\
**Post date:** [January 19, 2018, 1:15pm UTC](https://community.pix4d.com/t/merging-projects-in-command-line/5827/2 "2018-01-19T13:15:35Z")

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Hi Nicolas,&nbsp;

At the moment it is not possible to merge a project through the command line.

Note that to merge a project&nbsp;one should add Manual Tie Points (MTPs) in each subproject, this is another blocker as this can only be done in the user interface (UI).&nbsp;

The merging procedure is described in more detail in [this article](https://support.pix4d.com/hc/en-us/articles/202558529).

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**Author:** ![Nitzan\_Malachy](https://avatars.discourse-cdn.com/v4/letter/n/76d3ee/32.png) [@Nitzan\_Malachy](https://community.pix4d.com/u/Nitzan_Malachy)\
**Post date:** [June 15, 2020, 11:47am UTC](https://community.pix4d.com/t/merging-projects-in-command-line/5827/3 "2020-06-15T11:47:32Z")

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Hello,

I would like to request a feature that will enable merging projects through command line. I have projects that have thousands of images thus obligating me to split them up. I can mark gcps and mtps beforehand using the basic editor.

In addition, a feature of using optimize/rematch and optimize with the command line would help as well.

With these features it will be possible to process a very large project in pieces on the weekend and still have a product by its end, without need of intervention, using a batch file.

Please add those features.

Thanks,  
Nitzan

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**Author:** ![Christina](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/christina/32/303_2.png) [@Christina](https://community.pix4d.com/u/Christina)\
**Post date:** [June 16, 2020, 7:57am UTC](https://community.pix4d.com/t/merging-projects-in-command-line/5827/4 "2020-06-16T07:57:13Z")

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Hello,  
The command line has to be used with a Pix4Dengine license. We have ongoing discussions with our Enterprise customers about how to bettet develop the Pix4Dengine product. I recommend you [talk to your Sales representatives](https://www.pix4d.com/contact) and explain your needs to them.

Also, please keep in mind that Pix4D is developing Pix4Dmatic, a new product that is optimized for processing large datasets. You can have a look here: [Pix4Dmatic](https://www.pix4d.com/product/pix4dmatic-large-scale-photogrammetry-software) and subscribe to this page in order to get the updates about this new product.